Allrounder Shane Watson has been ruled out of Australia's first test against South Africa with a leg injury, Cricket Australia (CA) said on Monday.
Watson appeared to injure his left calf playing for New South Wales against Queensland on Saturday and had been a doubt for the test which begins on Friday at the Gabba in Brisbane.
"(Australia coach) Mickey Arthur today advised Rob Quiney will replace Watson," CA said in a brief statement on its website (www.cricket.com.au), without providing further details.
Left-handed batsman Quiney had been named as cover for Watson on Sunday.
Opener Quiney comes into the three-test series in good form after scoring 85 for Australia A against South Africa last week.